By car
From Lyon:
Take the A7 towards Marseille and exit at exit 18 Montélimar. Follow the direction of Pierrelatte, reach Bourg-Saint-Andéol and take the direction of Saint-Martin d’Ardèche.
From Marseille:
Take the A7 towards Lyon and exit at Lyon/N7. Continue on the N7 then take the direction of Barjac. Finally, follow Saint-Martin d’Ardèche.